The `LoopUtils` interface can be used on platforms that don't
support the Linux-specific `timerfd` interface.
Added `local-videotestsrc` to validate the plugin still functions.
Restructured the SDL event loop as the window would not update
under WSL2, resulting in a black window being shown. All rendering
in SDL2 must happen on the same thread that originally created the
renderer.
To prevent the SDL event loop from being starved, we make sure to
poll it at least every 100 ms.
The mapoffset should be using in the mmap call as the offset.
Mapping the whole memory before the offset and then ignoring the part
before it seems like it can work but it actually has some problems:
1. some drivers (v4l2) use the mapoffset to calculate the buffer to map
2. we waste resources for mapped but unused pages.
The problem with the mapoffset is that it needs to be page aligned and
that used to be a problem in the past. Nowadays PipeWire no longer set
the mapoffset for any of the memory that it allocates.
-To select between non-native(via control channel) and native modes(via audio
adapter ). The control port will be opened only in the non-native mode.
-To select different sample and sample step sizes. The Legacy non-native
mode also uses these params now.
-To provide the alsa device.
SPA_MEMBER is misleading, all we're doing here is pointer+offset and a
type-casting the result. Rename to SPA_PTROFF which is more expressive (and
has the same number of characters so we don't need to re-indent).
This makes it easier to test PipeWire in its "as-installed" state,
for example in an OS distribution.
The .test metadata files in ${datadir}/installed-tests/${package} are
a convention taken from GNOME's installed-tests initiative, allowing a
generic test-runner like gnome-desktop-testing to discover and run tests
in an automatic way.
The installation path ${libexecdir}/installed-tests/${package} is also
a convention borrowed from GNOME's installed-tests initiative.
In addition to the automated tests, I've installed example executables
in the same place, for manual testing. They could be separated into
a different directory if desired, but they seem like they have more
similarities with the automated tests than differences: both are there
to test that PipeWire works correctly, and neither should be relied on
for production use. Some examples are installed in deeper subdirectories
to avoid name clashes.
Signed-off-by: Simon McVittie <smcv@debian.org>
Example executable that runs an output audioadapter using audiotestsrc as slave
with an input audioadapter using alsa-pcm-sink as slave for easy testing.
The example-control executable does not play audio. This is because
alsa-pcm-sink needs a data system to run. This patch fixes the example by
loading a data system from libspa-support before creating the nodes.
FreeBSD doesn't provide timerfd and eventfd functions. These are implemented in
3rd party library called epoll-shim. Link targets requiring these functions to
this library.
